Compact fluorescent lamps (CFLs) can now be used in many standard light sockets and fixtures. CFLs typically consume about 67 to 75 percent less energy than incan-descent bulbs and last up to 10 times longer. This makes them ideal for use in fixtures that are not easily accessible, such as recessed luminaires and lights in stairwells. To gain the maximum economic benefits from compact fluorescent lamps, install them in fixtures that are used for three or more hours each day.